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Electromaglev : lévitation magnétique d'un disque supraconducteur dans un champ continu produit par des électroaimants. 4. Résultats théoriques et expérimentaux sur les distributions de supercourants dans des disques en YBCO refroidis sous champ.

Electromaglev ("active-maglev"): magnetic levitation of a superconducting disk with a DC field generated by electromagnets. 4. Theoretical and experimental results on supercurrent distributions in field-cooled YBCO disks.

Auteurs : TSUDA M., LEE H., NOGUCHI S., et al.

Type d'article : Article

Résumé

An electromagnetic analysis, based on a three-dimensional finite element technique applied to the current vector potential method, has been developed to determine the supercurrent distribution in a field-cooled (and hence trapped-flux) YBCO disk that levitates stably in a magnetic field generated by the magnet system. The supercurrent distribution thus determined was in turned used to compute trapped-flux-induced field profiles of the disk and predict a "levitation current" in the magnet system at which the disk, initially resting on a support plate, begins to levitate. Agreement between computed field profiles and levitation currents and those measured in the experiment was excellent.

Détails

  • Titre original : Electromaglev ("active-maglev"): magnetic levitation of a superconducting disk with a DC field generated by electromagnets. 4. Theoretical and experimental results on supercurrent distributions in field-cooled YBCO disks.
  • Identifiant de la fiche : 2001-2642
  • Langues : Anglais
  • Source : Cryogenics - vol. 39 - n. 11
  • Date d'édition : 1999

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